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Re: RFA: Fix copying of libgcc multilibs

Richard Sandiford wrote:

"all-multi" therefore installs each multilib's files into
"$objdir/gcc/$mlib/...", as expected.  But the default multilib's
"install" rule is itself recursive, so "all" recurses again, this time
installing with DESTDIR="../../gcc".  For non-default multilibs, this
means installing in "$objdir/$target_alias/$mlib/libgcc/../../gcc/".
I noticed this because libjava's testsuite was finding
"$objdir/$target_alias/gcc" instead of "$objdir/gcc", and was then
trying to run "$objdir/$target_alias/gcc/xgcc --print-multi-lib".

I wasn't sure whether we should add an "install-leaf" rule,
override MULTIDIRS, override MULTIDO, or something else,
but Dan voted for the first.

Bootstrapped & regression-tested x86_64-linux-gnu.  Also regression-tested
on mips64-linux-gnu.  OK to install?


libgcc/ * (all): Use install-leaf rather than install. (install): Split most of the rule into... (install-leaf): ...this new one.

Thanks Richard. This one was really bothering me.

FWIW, I can confirm that this is a real problem.

David Daney

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